How to insert a constant value into a column using ASP.Net SqlBulkCopy

Question

In the below code, I am trying insert the records from excel to Database table, but an additional column is not passed through the excel, which has to be populated with a constant value(foreach loop with a different value) assigned from the requested page.

string CONSTANTVALUE="Test";
bulkCopy.DestinationTableName = "TABLE NAME";
bulkCopy.ColumnMappings.Add("TABLECOLUMN1", "EXCELCOLUMN1");
bulkCopy.ColumnMappings.Add("TABLECOLUMN2", "EXCELCOLUMN2");
bulkCopy.ColumnMappings.Add("TABLECOLUMN3", CONSTANTVALUE);
bulkCopy.WriteToServer(dr);

But the code doesn't work. Any ideas?

Answer 1

You can do it, by changing your command text. As below

string CONSTANTVALUE="Test";
OleDbCommand command=new OleDbCommand("select *,"+CONSTANTVALUE+" as [ConstantCol] from [sheet$]",ObleDbCon);
using (DbDataReader dr = command.ExecuteReader())
{
bulkCopy.DestinationTableName = "TABLE NAME";
bulkCopy.ColumnMappings.Add("TABLECOLUMN1", "EXCELCOLUMN1");
bulkCopy.ColumnMappings.Add("TABLECOLUMN2", "EXCELCOLUMN2");
bulkCopy.ColumnMappings.Add("TABLECOLUMN3", "ConstantCol");
bulkCopy.WriteToServer(dr);
}